scholarly journals RESULTS OF RESEARCHES OF DEHYDRATION OF SMALL DISPERSED ROCK MASS ON A VIBRATING DEVICE OF NEW DESIGN

2020 ◽  
pp. 5-10
Author(s):  
Vladimir Naduty ◽  
Vitaliy Sukharev ◽  
Sergey Kostyrya
Keyword(s):  
Rock Mass ◽  
Raw Materials ◽  
Froth Flotation ◽  
Mining Industry ◽  
Raw Material ◽  
Auxiliary Process ◽  
Amplitude Fluctuations ◽  
Ash And Slag Waste ◽  
Mechanical Methods ◽  
Slag Waste

Great difficulties arise when processing wet mineral raw materials less than 1 mm, and this problem is given large attention. There is an urgent need to dehydrate the final product of mining to a minimum percentage of moisture. Such raw material includes coal, which in the process of mining and processing forms a large number of small particles with a size of 1.0 ÷ 0.05 mm and, when enriched by froth flotation, is saturated with moisture, which complicates the subsequent use of coal. Also, for the processing of man-made deposits, consisting of ash and slag waste, they must be dewatered for subsequent complex processing, which consists in the use of magnetic separation and fine screening. Mechanical dewatering devices do not always provide the final moisture content required by the market today. Only free and loosely bound moisture is extracted by mechanical methods, and pore and capillary moisture is not removed. Therefore, various sources of heat are used as an auxiliary process for the dehydration of minerals. The article presents the results of studies of dehydration of finely dispersed rock mass on a vibration device of a new design. Intensification of the dewatering process is achieved due to the vertical conical screw and the creation of a vibroboiling layer. Preliminary studies have shown the effectiveness of the use of a transport-drying device, while it was possible to reduce the humidity in the finished product from 15% to 5%. According to the results of the experiments, it was found that during the operation of the transport-drying device, the layer thickness decreases from loading to unloading by 3 times, while the path of movement of the material along the working surface increases 2.5 times, the frequency range of vibration excitation from 1000-1200 rpm, the amplitude fluctuations are 4-5 mm and the temperature of the supplied air is 50-80 Сº. Thus, the proposed dewatering device can be used in the mining industry, since, in addition to transportation, it is also capable of dewatering wet material with sufficient efficiency.

scholarly journals USE OF TECHOGENIC RAW MATERIALS IN THE TECHNOLOGY OF CERAMIC BRICKS PRODUCTION

2020 ◽  
pp. 160-169
Author(s):  
N.I. Buravchuk ◽  
O.V. Guryanova
Keyword(s):  
Negative Impact ◽  
Raw Materials ◽  
Raw Material ◽  
Laboratory Research ◽  
Regulatory Documents ◽  
Mine Dumps ◽  
Ash And Slag Waste ◽  
Technogenic Raw Materials ◽  
The Cost ◽  
Slag Waste

The article presents the results of a study of burnt rocks of mine dumps, ash and slag waste and clay raw materials for the purpose of their use in the technology of manufacturing ceramic bricks. Indicators of their quality are given. In terms of properties and composition, this raw material is close to clay. Compositions and technological modes for the manufacture of ceramic bricks using burnt rocks of mine dumps and ash and slag waste have been developed. The results of laboratory research and industrial tests are presented. The possibility of using this technogenic raw material in the technology of manufacturing ceramic bricks has been proven. The use of burnt rocks and ash and slag waste in the compositions for the manufacture of ceramic bricks can improve its quality, including strength and frost resistance. In all respects, prototypes of ceramic bricks meet the requirements of regulatory documents. The involvement of technogenic raw materials in production allows you to save part of natural raw materials, reduce the cost of products while improving their quality, and help reduce the negative impact of waste on the environment in the areas of their location.The involvement of technogenic raw materials in production allows you to save part of natural raw materials, reduce the cost of products while improving their quality, and help reduce the negative impact of waste on the environment in the areas where they are located.

INDUSTRIAL WESTE ACCOUNTING ON EXAMPLE ASH DUMPS

2021 ◽  
Vol 4 (4) ◽  
pp. 182-188
Author(s):  
T. S. BUDINA ◽  
◽  
N. Kh. KURBANOV ◽  
L. M. PROKOFIEVA ◽  
V. G. SHIYKO ◽  
...  
Keyword(s):  
Production Efficiency ◽  
Raw Materials ◽  
Accurate Determination ◽  
Accounting System ◽  
Secondary Material ◽  
Ash And Slag Waste ◽  
Sufficient Degree ◽  
Slag Waste ◽  
Financial Result

The article is devoted to the problems of accounting for industrial waste (technogenic deposits) on the example of ash and slag dumps. The influence of the organization of accounting for technogenic deposits on the indicators of cost, profit, and profitability of the enterprise, if these wastes are sold or used as secondary material, is studied. It is proved that the accounting system should accumulate and form such information that would allow with a sufficient degree of accuracy to determine the economic efficiency of the integrated use of raw materials, would aim at identifying reserves for increasing production efficiency. According to the authors, accounting under IFRS provides a more accurate assessment of ash and slag waste, which ultimately will allow the most accurate determination of the financial result from their further use.

scholarly journals LOW- GRADE STRUCTURES OF NOBLE AND NON- FERROUS METALS AND METHODS OF THEIR SELECTIVE SEPARATION

2021 ◽  
Vol 13 (2) ◽  
pp. 161-169
Author(s):  
Tatyana ALEXANDROVA ◽  
◽  
Anastasia AFANASOVA ◽  
Nadezhda NIKOLAEVA ◽  
◽  
...  
Keyword(s):  
Development Strategy ◽  
Raw Materials ◽  
Close Association ◽  
Mining Industry ◽  
Raw Material ◽  
Free Form ◽  
Mineral Matter ◽  
Low Grade ◽  
Rare Metals ◽  
Flotation Process

There is a worldwide trend of increasing the share of extraction and processing of low-grade minerals, but their extraction and processing volumes are still low. There are several reasons for this: high mining and transportation costs, imperfect techniques and technological difficulties in enrichment and processing of refractory and low-quality minerals. Due to the depletion of reserves of easily beneficiated raw materials and to compensate for the growing shortage of high-quality minerals, the Russian mining industry development strategy provides for the involvement of new and unconventional types of deposits into production. Examples of such deposits are deposits of carbonaceous raw materials (black shale, refractory sulphide carbon-bearing ores, impactites, etc.) containing carbon of varying degrees of metamorphism. On the basis of the most modern mineralogical, physical, nuclear and chemical methods of research of composition, structure and properties of the carbonaceous raw materials at the micro- and nanolevel, the composition of the productive mineral matter, physical, chemical and thermodynamic laws of separation of valuable mineral components and the basic technological processes to obtain the finished product for valorization of the unconventional carbonaceous mineral raw materials were determined with maximum reliability. One of the possible reasons of difficulty of beneficiation of carbonaceous raw materials is the fine phenocrysts in graphite which can be solved by using the flotation process. Contrast of surface properties of minerals with similar technological properties can be increased by application of different energy effects (MEMI, MIO, microwave, electrochemical treatment etc.) at successive stages of raw material transformation, regulation of pulp conditioning conditions (duration and intensity of agitation, heat treatment of pulp) as well as by development and application of selective reagent regimes. The special feature of flotation as a method of extraction of noble and rare metals is the ability to extract valuable metals not only in their native free form, but also in close association with sulphides and carbon. Flotation with the use of intensifying influences made it possible to transfereven low-sized structures of noble and rare metals, which are not extracted by conventional methods of cyanidation, gravitation enrichment and amalgamation, into the concentrate. One of the ways to increase the efficiency of the flotation process is preliminary modification of the additive which is introduced in addition to the main reagents of the sinter - “carrier material”.

scholarly journals Mixed magnesian binders using local silicate waste production

2021 ◽  
Vol 2131 (4) ◽  
pp. 042035
Author(s):  
E Lytkina
Keyword(s):  
Building Materials ◽  
Raw Materials ◽  
Mining Industry ◽  
Raw Material ◽  
Similar Process ◽  
Environmental Aspect ◽  
Waste Production ◽  
Material Component ◽  
Additional Processing ◽  
Technogenic Raw Materials

Abstract Today, the waste of the mining industry is more than 8 billion tons. Analysis of the literature data showed that most of the man-made waste that is generated as a result of the development of mineral deposits is suitable for use in many industries, in particular, in the production of building materials. The use of technogenic raw materials allows us to solve the following tasks: Environmental aspect - reducing the number of dumps and reducing their volumes. And this, in turn, improves the ecology of regions and territories. 2. Economic aspect - reducing the cost of construction products through the use of almost free raw materials, the release of more competitive products. Of course, it is necessary to provide that part of the costs will be spent on additional processing, revision, activation, modification of this technogenic raw material component. But today we have to think about how to clear the territory of substandard “waste rock” and use it to reduce the production and consumption of natural raw materials. A similar process can create waste-free production.

scholarly journals Interdependence of mining industry and industrial sectors in Slovakia

2020 ◽  
pp. 494-503
Keyword(s):  
Growth Rate ◽  
National Economy ◽  
Global Economy ◽  
Raw Materials ◽  
Mining Industry ◽  
Raw Material ◽  
Future Research ◽  
Industrial Sectors ◽  
Trend Mining

Due to globalization, all industrial sectors are mutually connected, which means that the sectors are part of the global economy, influenced by a similar trend. Mining relates to various industrial sectors. The base of mineral raw materials provides in the frame of certain regions the value that is possible to evaluate with optimal use complexly, and by this way profit for the owner, state and mining company, as well as single region is created. The goal of the presented contribution is to search for a position of raw material using in industries and its trend from the view of growth rate, in connection to the growth of other industries with the aim to provide long-term prosperity and contribution of industries to the national economy. Research had been done through growth rate of sales and revenues and one-way analysis of sales trend in analyzed period 2009-2018. The research is supported by initial decline analysis, orientated to the evaluation of positive and negatives of raw material using generally. According to the internal analysis, there are selected sectors directly connected to the mining industry. The results show there is the stable or improving character of the mining industry, which is very similar to industrial production, having influence with other industrial sectors. There is a recorded trend in the growth of individual industries, which varies significantly. The results of the contribution are useful in providing long-term prosperity and contribution of industries to the national economy, providing sustainable economic growth. The contribution is limited to the evaluation of industries growth from the view of sales and revenues, and future research can be extended to the evaluation from the view of market share, etc. Future research can also be extended to other macro-economic indicators, influencing the competitiveness of the mining industry and its sustainable tendency.

scholarly journals Analytical evaluation and systematization of technologies for extraction of rare metals from production waste

2021 ◽  
Vol 311 ◽  
pp. 09005
Author(s):  
L. Ya. Shubov ◽  
I. G. Doronkina ◽  
O. N. Borisova ◽  
L. M. Tyger ◽  
T. R. Lyubetskaya
Keyword(s):  
Permanent Magnets ◽  
Raw Materials ◽  
Liquid Waste ◽  
Acid Leaching ◽  
Production Waste ◽  
Rare Metals ◽  
Resource Saving ◽  
Alumina Production ◽  
Ash And Slag Waste ◽  
Slag Waste

The article is a message containing systematized information on resource-saving technologies as the basic for involving metal-containing secondary raw materials in the economic turnover. The set of independent technologies arranged in a certain sequence that solve the problems of resource saving allows us to compare the specific features and effectiveness of the use of each of them, the details and features of the processes. It is shown that the following can be the main sources of rare metals and REE: phosphogypsum (REE, Sr); ash and slag waste from TPPs, ash and slag waste (REE, Ti, Sc); metallurgical slags (Ge, Be, Se, Te, V); sulfuric acid dust (Se, Te); alumina production waste - red mud (Sc, REE); liquid waste from sulphate production of titanium dioxide (Sc, Ti); refinery dust bins (Se, Te); wastes from production of permanent magnets (Nd, Sm). It is noted that the technology uses beneficiation methods, acid leaching and ion-exchange concentration, biotechnology, electrolysis, heat treatment, a combination of different methods. To assess the quality of man-made raw materials and their suitability for complex processing and utilization, the article uses the methodology of analytical research of a set of patented technological solutions (technological samples were taken from real man-made deposits).

Methodological bases of mineral resource potential assessment: international and Russian experience

2021 ◽  
Vol 2 ◽  
pp. 61-70
Author(s):  
I.G. Burtseva ◽  
Keyword(s):  
Mineral Resource ◽  
Net Present Value ◽  
Raw Materials ◽  
Mining Industry ◽  
Raw Material ◽  
Mineral Deposits ◽  
Annual Data ◽  
Russian Society ◽  
Present Value ◽  
Resource Potential

Тhe paper considers the main approaches to the valuation of mineral deposits. The valuation of mineral resources is widely used in countries with developed mining industry, such as the USA, Canada, Australia, etc. Monitoring the value of mineral assets allows you to track current changes in their structure and serves as a basis for the fair withdrawal of mining rent. The methods of financial and economic evaluation of mineral deposits are based on the standard methodology for investment projects assessment. The most widely used is the net present value method, which is used only for the estimation of commercial reserves. The resource assessment can be carried out using comparative methods and be used to improve the infor-mativeness of the assessment. The paper reviews the methods used to access the mineral resource potential of Russian regions, forms of statistical observation, and standards of the Russian Society of Appraisers. Contemporary Russian legislation in the field of mineral raw material valuation is based on international experience, where the main valuation method of mineral assets is the method of net present value. With the approval in 2017 of the statistical form "Information on the current market value of mineral reserves”, official annual data on the value of mineral raw materials in the subsurface appeared in Russia for the first time. The methodology for assessing the mineral resource potential of the region should include such stages as ranking mineral deposits according to their investment attractiveness, evaluating selected deposits with approved reserves using the net present value method with determining the budget efficiency of projects, and evaluating the gross potential value of resources of promising mineral resource objects.

Ash-Slag Waste of the Coal-Fired Thermal Power Plant as a Resource for the Construction Industry

2021 ◽  
Vol 1038 ◽  
pp. 290-295
Author(s):  
Viktor Kolokhov ◽  
Lina Moroz ◽  
Andrey Romin ◽  
Volodymyr Kovregin
Keyword(s):  
Power Plant ◽  
Power Plants ◽  
Raw Materials ◽  
Thermal Power ◽  
Metallurgical Industry ◽  
Ash And Slag Waste ◽  
Technical Properties ◽  
Concrete Materials ◽  
Slag Waste ◽  
Wide Potential

The article presents a study of the physical and technical properties of ash and slag waste Coal Power Plant. The main problem when using ash-slag mixtures is the variability of the particle size distribution of the material. Determining the characteristics of slag stored in the dumps of thermal power plants will help to choose the separation methods of this material, to address the disposal and accumulation of industrial waste, to expand the scope of their application. The obtained research results of physical and technical properties of waste of the Coal TPP testify to wide potential in the further use in many branches of the industry. Possible applications include fillers for concrete, materials for sandblasting (abrasive material), raw materials for the metallurgical industry, additives for the manufacture of binders, etc.

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